def test_revert_to_default(self):
scales = [FixedScale(resolution = 1.0),
FixedScale(resolution = 10.0),
FixedScale(resolution = 100.0)]
ticker = ScaleSystem(*scales)
ticks = ticker.ticks(2.0, 3.0, 10)
self.check_ticks(ticks, frange(2.0, 3.0, 0.1))
def ticks(self, start, end, desired_ticks=None):
""" Returns the set of "nice" positions on this scale that enclose and
fall inside the interval (*start*,*end*).
Implements AbstractScale. The *start* and *end* parameters are
floating-point seconds since the epoch.
"""
if self.unit in self.CALENDAR_UNITS:
return self.cal_ticks(start, end)
elif self.unit in ("milliseconds", "microseconds"):
if start == end or (end - start) < self.SECS_PER_UNIT[self.unit]:
return [start]
secs_per_unit = self.SECS_PER_UNIT[self.unit]
start /= secs_per_unit
end /= secs_per_unit
if desired_ticks is None:
min, max, delta = heckbert_interval(start, end, enclose=True)
else:
min, max, delta = heckbert_interval(start,
end,
desired_ticks,
enclose=True)
min *= secs_per_unit
max *= secs_per_unit
delta *= secs_per_unit
return frange(min, max, delta)
else:
return trange(start, end, **{self.unit: self.val})
def ticks(self, start, end, desired_ticks=None):
""" Returns the set of "nice" positions on this scale that enclose and
fall inside the interval (*start*,*end*).
Implements AbstractScale. The *start* and *end* parameters are
floating-point seconds since the epoch.
"""
if self.unit in self.CALENDAR_UNITS:
return self.cal_ticks(start, end)
elif self.unit in ("milliseconds", "microseconds"):
if start == end or (end - start) < self.SECS_PER_UNIT[self.unit]:
return [start]
secs_per_unit = self.SECS_PER_UNIT[self.unit]
start /= secs_per_unit
end /= secs_per_unit
if desired_ticks is None:
min, max, delta = heckbert_interval(start, end, enclose=True)
else:
min, max, delta = heckbert_interval(start, end, desired_ticks, enclose=True)
min *= secs_per_unit
max *= secs_per_unit
delta *= secs_per_unit
return frange(min, max, delta)
else:
return trange(start, end, **{self.unit: self.val})
def test_revert_to_default(self):
scales = [FixedScale(resolution = 1.0),
FixedScale(resolution = 10.0),
FixedScale(resolution = 100.0)]
ticker = ScaleSystem(*scales)
ticks = ticker.ticks(2.0, 3.0, 10)
self.check_ticks(ticks, frange(2.0, 3.0, 0.1))
def test_fixed_scales(self):
scales = [FixedScale(resolution = 1.0),
FixedScale(resolution = 10.0),
FixedScale(resolution = 100.0)]
ticker = ScaleSystem(default_scale=None, *scales)
self.check_ticks(ticker.ticks(5, 35, 3), (10.0, 20.0, 30.0))
self.check_ticks(ticker.ticks(5, 35, 20), frange(5.0, 35.0, 1.0))
self.check_ticks(ticker.ticks(5, 614, 10), (100, 200, 300, 400, 500, 600))
def test_fixed_scales(self):
scales = [FixedScale(resolution = 1.0),
FixedScale(resolution = 10.0),
FixedScale(resolution = 100.0)]
ticker = ScaleSystem(default_scale=None, *scales)
self.check_ticks(ticker.ticks(5, 35, 3), (10.0, 20.0, 30.0))
self.check_ticks(ticker.ticks(5, 35, 20), frange(5.0, 35.0, 1.0))
self.check_ticks(ticker.ticks(5, 614, 10), (100, 200, 300, 400, 500, 600))
def test_defaults(self):
ticker = ScaleSystem()
ticks = ticker.ticks(5, 30, 10)
self.check_ticks(ticks, frange(5.0, 30.0, 2.5))
def test_pow10(self):
scale = Pow10Scale()
ticks = scale.ticks(5, 15, 8)
self.check_ticks(ticks, frange(5, 15, 1.0))
ticks = scale.ticks(5, 105, 8)
self.check_ticks(ticks, frange(10, 100, 10.0))
def test_defaults(self):
ticker = ScaleSystem()
ticks = ticker.ticks(5, 30, 10)
self.check_ticks(ticks, frange(5.0, 30.0, 2.5))
def test_pow10(self):
scale = Pow10Scale()
ticks = scale.ticks(5,15,8)
self.check_ticks(ticks, frange(5, 15, 1.0))
ticks = scale.ticks(5,105,8)
self.check_ticks(ticks, frange(10, 100, 10.0))
